We're planning to travel to Japan for the last week of November and the first week of December, and the current plan is to go to Hokkaido for the first week, then Tohoku for the second one. We're mostly interested in one-day hiking (so no camping) and nice rural scenic areas in general.

Is the weather permissive for hiking in Hokkaido in late November? My worry is that everything will be snowed in and inaccessible on foot (we are not interested in skiing). Is the Daisetsuzan National Park (and other parks in general) accessible at that time?